Numbers k such that (13*10^k - 139)/9 is prime.

Terms

a(0) =3a(1) =7a(2) =46a(3) =51a(4) =87a(5) =124a(6) =141a(7) =301a(8) =309a(9) =400a(10) =667a(11) =1749a(12) =2512a(13) =3859a(14) =4323a(15) =4515a(16) =9238a(17) =9592